Senior Guest Instructors
Main Instructors
Sempai Austin Rieger

Sempai Austin has been training in the martial arts for over ten years and is extremely pleased to be given the opportunity to become the chief instructor at the Greenwood Karate Dojo.  He has run large child and adult karate programs for the last several years and has taught extensively in both York and Peel region secondary schools as a self defense instructor.
Sensei Jaime Yamanaka

Sensei Jaime is a 3rd Degree Black Belt in Okinawa Goju Ryu, a Certified Personal Protections Systems Instructor and Budo Life Skills Coach and a Gold Medalist for Canada at the Maccabiah Games in Israel. Sensei Jaime is also the Chief Instructor of the University of Waterloo Karate Club.
Sempai Ben Alemayehu

Sempai Ben is a 2nd Degree Black Belt in Okinawa Goju Ryu, 2nd Degree Black Belt Yamanaka-Ha Shindo Ryu and a Certified Personal Protections Systems Instructor and Budo Life Skills Coach. Sempai Ben is also a qualified Acupuncturist . He began his Martial Arts training in London, England under Sensei Nathaniel Peat. He moved to Toronto in 2007 to study directly under Shihan Yamanaka.
Sempai Betty-Anne Gifford

Sempai Betty-Anne began training in October 2006 under the tutelage of Shihan Yamanaka and achieved her international black belt ranking in Italy in April of 2010 and National black belt ranking in Canada in June of 2010.